20224442465 has 4 divisors (see below), whose sum is σ = 24269330964. Its totient is φ = 16179553968.

The previous prime is 20224442419. The next prime is 20224442473. The reversal of 20224442465 is 56424442202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3346275409 + 16878167056 = 57847^2 + 129916^2 .

It is a cyclic number.

It is not a de Polignac number, because 20224442465 - 2¹⁸ = 20224180321 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2022444242 + ... + 2022444251.

It is an arithmetic number, because the mean of its divisors is an integer number (6067332741).

Almost surely, 2^20224442465 is an apocalyptic number.

It is an amenable number.

20224442465 is a deficient number, since it is larger than the sum of its proper divisors (4044888499).

20224442465 is an equidigital number, since it uses as much as digits as its factorization.

20224442465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4044888498.

The product of its (nonzero) digits is 122880, while the sum is 35.

Adding to 20224442465 its reverse (56424442202), we get a palindrome (76648884667).

The spelling of 20224442465 in words is "twenty billion, two hundred twenty-four million, four hundred forty-two thousand, four hundred sixty-five".